Toilet tablet makes plumber blue

I am a plumber, and I wanted to give my two cents' worth on those blue bleach tablets that folks drop in the tank to keep the toilet bowl clean in between scrubbings.

I hate 'em. A strong bleach tablet so close to the rubber flapper will degrade it, which eventually will cause water to leak from the tank. This is wasteful.

The blue coloring masks lime and iron buildup. And the blue material will turn to gel eventually, which can clog the jets underneath - what a mess!

My solution is one of your favorites: white vinegar. I recommend pouring 1 cup of white vinegar into the overflow (the skinny pipe that stands up in the tank). This will allow the vinegar to circulate inside the rim and dissolve buildup when the toilet is flushed. Do this once a month.